Looks like you are frosting up on the bottom rows also. If continued to run like that it will eventually cause the whole coil to ice.
Check your airflow to make sure vents are open, filter is clean return air is unobstructed, ac coil is clean on both sides, etc...
Failing that it could be a low head pressure issue ( probably not since your outdoor temperature was 68).
My guess, without putting gauges on it or looking at it, in your case would be that it is low on charge. Units only become low on charge if there is a leak so you would need to find and fix the leak before adding the proper amount of refrigerant.
You shouldn’t run the unit with the door off like that. I get that it was probably only for a short time but it’s not really good, specially since you don’t have a TXV feeding your coil. Also just so the info is out there for whoever searches this thread later, don’t blindly add Refrigerant to that system, it needs to be charged very specifically. For leak repair and charging you will probably want to involve your local HVAC company and have them come out to help you.